Does the STOP STP-BX Brass Shut-Off Valve with Female Thread and Plug-In Connector stop airflow immediately if pneumatic control signal is lost?

Yes. The STOP STP-BX Brass Shut-Off Valve with Female Thread and Plug-In Connector is designed to permit airflow only while a pneumatic control signal is present and to immediately halt the actuator in case of pressure loss. Its description specifies that it acts as a protective valve that stops airflow immediately upon loss of the pneumatic control signal, ensuring maximum safety and reliability in pneumatic systems.

Can the STOP STP-BX Brass Shut-Off Valve with Female Thread and Plug-In Connector be used with gases other than air, and are there any media compatibility limitations?

The STOP STP-BX Brass Shut-Off Valve with Female Thread and Plug-In Connector is primarily designed for pneumatic systems and optimised for use with compressed air. Its materials—nickel-plated brass body and NBR (nitrile) seals—make it suitable for many non-corrosive, dry gaseous media similar to compressed air (e.g., nitrogen) within the stated operating limits (0.5–10 bar, -10°C to +60°C). However, there are important compatibility limitations: - NBR seals are not resistant to strong acids, ketones, some chlorinated hydrocarbons, aromatic hydrocarbons, and certain refrigerants or oxygen-enriched mixtures; these can cause swelling, hardening or degradation of the seal. - Aggressive, highly oxidising or chemically reactive gases and vapor mixtures (including many hydrocarbons, hydrogen sulfide, chlorine, and others) may attack the brass body or seals or create safety hazards. - Moist, oily or particulate-laden gases can reduce service life and reliability if filtration/drying is not provided. Recommendation: For gases other than compressed air, verify chemical compatibility of brass and NBR with the specific gas and operating conditions. For aggressive, oxygen-rich, cryogenic, or flammable gases, consult the manufacturer or a materials compatibility chart and consider valves with appropriate body materials and seal compounds.

STOP STP-BX Brass Shut-Off Valve with Female Thread and Plug-In Connector

All products, Pneumatic valves/

Additional information

Material	B – brass (bronze)

The STOP shut-off valve series STP-BX with internal thread and plug connection is designed to ensure maximum safety and reliability in pneumatic systems. Acting as a protective valve, it permits airflow exclusively when a pneumatic control signal is present, immediately halting the actuator in case of pressure loss. With an operating range from 0.5 to 10 bar and a temperature tolerance between -10°C and +60°C, it guarantees stable performance even under demanding conditions. The robust nickel-plated brass body provides excellent durability and resistance to wear, while high-quality NBR sealing ensures tightness and long-lasting efficiency. Compact, efficient, and easy to integrate, the STP-BX valve is the ideal solution for industries seeking dependable protection and precise control in their pneumatic applications.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
MW-W6001101002	STOP valve STP-BX, G 1/8" / GZ 1/8", pilot hose 4 mm	-	10	In stock	Enquiry
MW-W6001111012	STOP valve STP-BX, G 1/4" / GZ 1/4", pilot hose 4 mm	-	10	In stock	Enquiry
MW-W6001121022	STOP valve STP-BX, G 3/8" / GZ 3/8", pilot hose 4 mm	-	10	In stock	Enquiry

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The STOP shut-off valve series STP-BX with internal thread and plug connection is designed to ensure maximum safety and reliability in pneumatic systems. Acting as a protective valve, it permits airflow exclusively when a pneumatic control signal is present, immediately halting the actuator in case of pressure loss. With an operating range from 0.5 to 10 bar and a temperature tolerance between -10°C and +60°C, it guarantees stable performance even under demanding conditions. The robust nickel-plated brass body provides excellent durability and resistance to wear, while high-quality NBR sealing ensures tightness and long-lasting efficiency. Compact, efficient, and easy to integrate, the STP-BX valve is the ideal solution for industries seeking dependable protection and precise control in their pneumatic applications.